<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>

<body>
  <div id="app">
    <div v-for="(floor, index) in floors">
      <h3>{{floor.title}}</h3>
      <ul>
        <li v-for="(item, i) in floor.items">
          <h4>这是第{{index+1}}楼,商品名字：{{item.name}}</h4>
          <p>商品价格：{{item.price}}</p>
        </li>
      </ul>
    </div>
  </div>
  <script src="./vue.js"></script>
  <script>

    const vm = new Vue({
      el: '#app',
      data: {
        floors: [
          {
            title: '手机',
            items: [
              {
                name: '手机1',
                price: 10
              },
              {
                name: '手机2',
                price: 20
              },
              {
                name: '手机3',
                price: 30
              },
              {
                name: '手机4',
                price: 40
              }
            ]
          },
          {
            title: '电脑',
            items: [
              {
                name: '电脑1',
                price: 10
              },
              {
                name: '电脑2',
                price: 20
              },
              {
                name: '电脑3',
                price: 30
              },
              {
                name: '电脑4',
                price: 40
              }
            ]
          }
        ]
      }
    })

  </script>
</body>

</html>